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Finding the Fourth Proportional to 922,216.40, 1,379,177.40 and 772,917.20

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Solution

The fourth proportional to 922,216.40, 1,379,177.40 and 772,917.20 is: 1,155,900.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,216.40 : 1,379,177.40 = 772,917.20 : x
  2. Step 2: Convert to fraction form
    922,216.40/1,379,177.40 = 772,917.20/x
  3. Step 3: Cross multiply
    922,216.40x = 1,379,177.40 × 772,917.20
  4. Step 4: Simplify right side
    922,216.40x = 1,065,989,934,311.28
  5. Step 5: Solve for x
    x = 1,065,989,934,311.28/922,216.40
  6. Step 6: Final answer
    x = 1,155,900.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.